VMAX driver - Error attaching failed over volumes

[Ciara Stacke]

Attempting to attach a volume to a server after a replication failover fails with "(error: list index out of range")

a. Create a "non-bootable" volume in a replication enabled group
b. Failover the group. Ensure the remote array is now the primary array
c. Attach volume to any instance

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/488410

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/488410
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=662f34b67ccd48553c77c81ae1d377ef20a7ebc0
Submitter: Jenkins
Branch: master

commit 662f34b67ccd48553c77c81ae1d377ef20a7ebc0
Author: Ciara Stacke <email address hidden>
Date: Fri Jul 28 12:50:10 2017 +0100

    VMAX driver - Error attaching failed over volumes.

    Attempting to attach a volume to a server on FC after a replication
    failover fails with "error: list index out of range". This is because
    'common.get_target_wwns_from_masking_view' does not check if the
    volume is failed over. This patch rectifies the issue. This patch also
    adds some locks around RDF groups to avoid concurrency issues.

    Change-Id: Ie04513903b7e75e6373124c164007fd141acdcc6
    Closes-Bug: #1707181

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 11.0.0.0rc1 release candidate.